Begin by typing FORWARD (or FD), then a space, and a number. You can also type BACK (BK), RIGHT (RT), and LEFT (LT). All of these move or turn the arrow (called a turtle). Type HIDETURTLE (HT) to make the turtle disappear. To make it reappear, type SHOWTURTLE (ST). Type HOME to bring the turtle back to the middle of the screen. Type DRAW or CLEARSCREEN (CS) to restart. You can type PENUP (PU) to make the turtle stop leaving a trail. Typing PENDOWN (PD) makes the turtle leave a trail again. After every time you type, press the enter key. EDIT: This version now has an entry list. As you type, your commands are saved in the 'ENT' list. They are not executed. To execute the commands, type ES or ENTRY STOP. To clear the ENT, type CE or CLEAR ENTRY. To change a command, enter ALTER LIST or AL. You can also enter a command directly. To do that, use the DIRECT ENTRY or DE command first. Used in Chicago Basic OS!
To draw a house, type these in, one by one: CE ST DRAW FD 50 RT 90 FD 50 RT 90 FD 50 RT 90 FD 50 RT 90 FD 50 RT 30 FD 50 RT 120 FD 50 RT 120 FD 50 RT 90 BK 50 HT ES #Programming-language #Programming
